A skateboard has a mass of 3.5 kg.
Calculate the kinetic energy of the skateboard when it is rolling at a velocity of 6.0 m/s.
Use the equation:
kinetic energy=0.5×mass×speed2 \text{kinetic energy} = 0.5 \times \text{mass} \times \text{speed}^2 kinetic energy=0.5×mass×speed2